Most supermarkets may appear like straightforward places, but you may be surprised to learn what goes on behind the scenes. Like when it comes to how your meat is packaged and priced, and why you have those few items in your cart at the checkout that weren't on your list when you walked in. Grocery stores and supermarkets are big business, and there's a lot of planning that goes into seemingly simple things. Like did you know that cartoony packages and other kid-friendly items are usually stocked at children's eye level, while healthier items are put in harder to reach locations that may require inconvenient bending and stretching?

That's just the tip of the ice berg -- for the rest check out this list of the 10 things supermarkets don't want you to know. Shifty bunch, those supermarkets.